CN118016467A - Key with noise reduction effect - Google Patents

Abstract

The invention relates to a key which comprises a key cap, a bottom plate, a first balance rod and a thin film circuit board. The connecting structure of the bottom plate is defined with a first vertical hole, a first abutting block and a first plate hole communicated with the first vertical hole. The tail end of the first balance rod with the first connecting section is movably inserted into the first vertical hole. The thin film circuit board is provided with a bearing area which is positioned between the tail end of the first connecting section and the first plate hole. When the key cap returns to the non-pressed position, the tail end of the first connecting section slides on the bearing area and moves outwards along the first vertical hole until being blocked at the position where the first abutting block abuts against the lower part of the bearing area. The invention can effectively solve the problem of shaking of the key structure when pressing because of the existence of the gap, and can also avoid the impact noise or resonance noise generated by the balance bar in the pressing/releasing process because of eliminating the gap, thereby further improving the noise reduction effect.

Description

Key with noise reduction effect

Technical Field

The present invention relates to a key, and more particularly, to a key capable of reducing pressing shake.

Background

Keyboards have been common input peripherals for data processing devices. The operation surface of the key of the keyboard is mostly square. However, the operation surface of some keys has a longer side, such as "ENTER", "SPACE", "SHIFT" keys, and so on, and these special keys are generally called multiple keys.

The multiple key is mostly configured with a balance bar connected between the key cap and the bottom plate so that when a user presses one end of the multiple key, the other end of the multiple key, which is not pressed, can be lowered.

However, in order to facilitate assembly, there is a gap at the connection of the balance bar and the bottom plate, so that the shaking of the key structure occurs easily during the pressing process.

Disclosure of Invention

The present invention is directed to a key with reduced pressing shake, so as to solve the above-mentioned problems.

According to an aspect of the present invention, there is provided a key comprising:

A key cap;

The bottom plate is provided with at least one connecting structure and is defined with a first vertical hole, a first plate hole and a first abutting block, wherein the first plate hole and the first abutting block are parallel to correspond to the first vertical hole, and the first plate hole is communicated with the first vertical hole;

the thin film circuit board is provided with at least one bearing area corresponding to the first vertical hole and at least partially overlapping the first plate hole and the first abutting block; and

The first balance rod is provided with a first key cap section and at least one first connecting section, the first key cap section is rotatably connected with the key cap, and the tail end of the first connecting section is movably inserted into the first vertical hole, so that the bearing area of the thin film circuit board is positioned between the first plate hole and the tail end of the first connecting section;

when the key cap returns to the non-pressed position from the pressed position, the tail end of the first connecting section slides on the bearing area and moves outwards along the first vertical hole until the tail end of the first connecting section is blocked at the position where the first abutting block abuts against the lower part of the bearing area.

As an optional technical solution, the width of the first abutment block is greater than or equal to the radius of the end of the first connection section.

As an alternative solution, the width of the first plate hole is smaller than the width of the first standing hole.

As an alternative solution, the first abutment block is located outside the first plate hole.

As an optional technical scheme, the connecting structure of the bottom plate is further defined with a second vertical hole, a second plate hole and a second abutting block, the second plate hole and the second abutting block are parallel to correspond to the second vertical hole, and the second plate hole is communicated with the second vertical hole;

the thin film circuit board is also provided with another bearing area corresponding to the second vertical hole and the other bearing area and at least partially overlapping the second plate hole and the second abutting block;

The key also comprises a second balance bar, which is provided with a second key cap section and at least one second connecting section, wherein the second key cap section is rotatably connected with the key cap, and the tail end of the second connecting section is movably inserted into the second vertical hole, so that the other bearing area of the thin film circuit board is positioned between the second plate hole and the tail end of the second connecting section.

As an alternative solution, the diameter of the end of the first connecting section is larger than the remaining height of the first vertical hole after deducting the thickness of the bearing area of the thin film circuit board and the thickness of the first abutting block.

As an optional technical scheme, the key further comprises at least one lifting bracket, and the at least one lifting bracket is connected between the key cap and the bottom plate.

As an optional technical solution, the key further includes:

the reset piece is arranged between the keycap and the bottom plate and is used for providing reset force to the keycap.

As an alternative solution, the first abutment block has an open edge abutting the first upright hole; or the first abutment block has an open edge abutting the first plate hole.

Another object of the present invention is to provide a key, including:

A key cap;

The bottom plate is provided with at least one connecting structure and is defined with a first vertical hole, a first plate hole and a first abutting block, wherein the first plate hole and the first abutting block are parallel to correspond to the first vertical hole, and the first plate hole is communicated with the first vertical hole;

The thin film circuit board is provided with at least one bearing area corresponding to the first vertical hole and at least partially overlapping the first plate hole and the first abutting block;

At least one lifting bracket connected between the key cap and the bottom plate;

at least one reset piece for providing reset force of the key cap; and

The first balance rod is provided with a first key cap section and at least one first connecting section, the first key cap section is rotatably connected with the key cap, and the tail end of the first connecting section is movably inserted into the first vertical hole, so that the bearing area of the thin film circuit board is positioned between the first plate hole and the tail end of the first connecting section;

When the key cap returns to the non-pressed position from the pressed position, the tail end of the first connecting section slides on the bearing area and moves outwards along the first vertical hole until the tail end of the first connecting section is blocked at the position where the first abutting block abuts against the lower part of the bearing area.

In summary, the invention can effectively solve the problem of shaking of the key structure when pressing due to the existence of the gap, and can also avoid the impact noise or resonance noise generated by the balance bar in the pressing/releasing process due to the elimination of the gap, thereby further improving the noise reduction effect. Meanwhile, after the design of the invention is introduced, as the sliding of the balance bar is controlled, the invention overcomes the shaking or pressing shaking of the structure, resonance noise/impact noise and simultaneously realizes the possibility of controlling the height of the key cap by the balance bar.

The invention will now be described in more detail with reference to the drawings and specific examples, which are not intended to limit the invention thereto.

Drawings

Fig. 1 is a schematic perspective view of a key according to an embodiment of the invention.

Fig. 2 is an enlarged schematic exploded view of a portion of the key of fig. 1.

Fig. 3A is an enlarged schematic view of a portion of the key of fig. 1.

Fig. 3B is an enlarged schematic view of a portion of the lift bracket shown in fig. 3A with the thin film circuit board removed.

Fig. 4 is a schematic cross-sectional view of the key of fig. 1 along the section line A-A.

Fig. 5 is a schematic cross-sectional view of the key of fig. 4 when the key cap is pressed to the pressed position.

Detailed Description

Referring to fig. 1 and 2, fig. 1 is a schematic perspective view of a key 10 according to an embodiment of the present invention, and fig. 2 is an enlarged exploded view of a portion of the key 10 in fig. 1, wherein in order to clearly show the connection relationship of the internal structure of the key 10, the key cap 12 is only schematically shown by a perspective dashed line in fig. 1. As shown in fig. 1 and 2, the key 10 may preferably be a multiple key with a balance bar keyboard key (e.g., but not limited to "ENTER", "SPACE", "SHIFT" key) and includes a key cap 12, a base plate 14, at least one lifting bracket 16 (two shown in fig. 1 but not limited thereto), a first balance bar 18, a second balance bar 20, and a thin film circuit board 22. The base plate 14 is formed with at least one connection structure 24 (two are shown in the figures, but not limited thereto) for connecting the balance bars 18/20 (i.e., the first balance bar 18, the second balance bar 20), the balance bars 18/20 are inserted between the ends of the connection structure 24 and the abutment blocks 56/60 of the connection structure 24 (i.e., the first balance bar 18 is inserted between the ends of the connection structure 24 and the first abutment blocks 56 of the connection structure 24, the second balance bar 20 is inserted between the ends of the connection structure 24 and the second abutment blocks 60 of the connection structure 24), and the thin film circuit board 22 is provided with a carrying area 220; the lifting support 16 is preferably a scissor support (or other common key supports such as butterfly supports) and is connected between the keycap 12 and the base plate 14, so that the keycap 12 can move up and down between an unpressed position and a pressed position relative to the base plate 14. The thin film circuit board 22 may be disposed on the bottom plate 14, and when the key cap 12 is pressed to the pressing position, a switch (not shown) on the thin film circuit board 22 may be correspondingly triggered by a trigger portion (not shown), so that the key 10 may perform the function desired to be input by the user. As for the above-mentioned lifting support design and the thin film circuit triggering design of the key 10, they are common in the prior art and will not be described herein. In practical applications, the key 10 may further include a restoring member (not shown) such as various elastomers or magnetic attraction back designs (not shown), and the restoring member may be disposed between the key cap 12 and the bottom plate 14 to provide restoring force to the key cap 12, so that the key cap 12 can automatically return from the pressed position to the non-pressed position when the external force is released. The aforementioned trigger portion may be provided on the reset device, the elevating bracket 16, or the key cap 12 so as to move up and down as the key 10 is pressed.

In terms of the connection design between the base plate 14 and the first balance bar 18 and the second balance bar 20, please refer to fig. 1,2, 3A, 3B, and 4, fig. 3A is a partially enlarged view of the key 10 in fig. 1, fig. 3B is a partially enlarged view of the key 10 in fig. 3A with the thin film circuit board 22 and the lifting bracket 16 removed, and fig. 4 is a cross-sectional view of the key 10 along the section line A-A in fig. 1. As can be seen from the above figures, the connecting structure 24 of the base plate 14 may have a flat plate portion 26 and an upright portion 28; the first balance bar 18 may have a first key cap section 30 and at least one first connecting section 32 (preferably two are shown in fig. 1 to form a C-bar structure), the second balance bar 20 and the first balance bar 18 are opposite each other and have a second key cap section 34 and at least one second connecting section 36 (preferably two are shown in fig. 1 to form a C-bar structure), and the first key cap section 30 and the second key cap section 34 are rotatably connected to the key cap 12 to be correspondingly rotatable as the key cap 12 moves up and down. The flat plate portion 26 and the upright portion 28 are substantially perpendicular to each other or are angled between 90 degrees and 10 degrees. For simplicity of description, only the connection design of one of the connection structures 24 and the connection section corresponding to the first balance bar 18 and the second balance bar 20 is described, and the description of the connection design of the other connection structure and the connection section corresponding thereto is omitted herein.

In this embodiment, the upstanding portion 28 has a first upstanding aperture 46 and a second upstanding aperture 48. In detail, the upright portion 28 may have a ledge 38 and a first standing wall 40, a second standing wall 42 and a third standing wall 44 formed by protruding from the flat plate portion 26, the second standing wall 42 and the third standing wall 44 are respectively located at two sides of the first standing wall 40 (i.e. the second standing wall 42 and the third standing wall 44 are respectively disposed outwards relative to the first standing wall 40), the ledge 38 is bridged over the first standing wall 40 and the second standing wall 42 to define a first standing hole 46, the ledge 38 is bridged over the first standing wall 40 and the third standing wall 44 to define a second standing hole 48, the first bending end 50 of the first connecting section 32 is movably inserted into the first standing hole 46, and the second bending end 52 of the second connecting section 36 is movably inserted into the second standing hole 48.

Correspondingly, the plate portion 26 may have a first plate hole 54, a first abutment block 56, a second plate hole 58, and a second abutment block 60, where the first plate hole 54 communicates with the first standing hole 46 and is approximately perpendicular, the second plate hole 58 communicates with the second standing hole 48 and is approximately perpendicular, and as shown in fig. 4, the first abutment block 56 extends inward from the first outer side S1 of the plate portion 26 corresponding to the second standing wall 42 toward the first plate hole 54 such that the width L2 of the first plate hole 54 is smaller than the width L1 of the first standing hole 46, and the second abutment block 60 extends inward from the second outer side S2 of the plate portion 26 corresponding to the third standing wall 44 toward the second plate hole 58 such that the width L4 of the second plate hole 58 is smaller than the width L3 of the second standing hole 48. The abutment block 56/60 has two adjacent open edges that abut the riser 46/48 and the plate hole 54/58, respectively (i.e., the first abutment block 56 has two adjacent open edges that abut the first riser 46 and the first plate hole 54, respectively, and the second abutment block 60 has two adjacent open edges that abut the second riser 48 and the second plate hole 58, respectively), and the two open edges of the abutment block 56/60 (i.e., the first abutment block 56 and the second abutment block 60), one parallel the long side of the key cap 12 and the other parallel the short side of the key cap 12; the opening edge of the abutment block 56/60 parallel to the short side of the key cap 12 is approximately parallel to the outer surfaces of the first and second vertical walls 40, 42.

For a detailed description of the structural operation of the first balance bar 18 and the second balance bar 20, refer to fig. 4 and fig. 5, and fig. 5 is a schematic cross-sectional view of the key 10 in fig. 4 when the key cap 12 is pressed to the pressed position. Since the key cap 12 is not pressed and is located at the high position, the first bending end 50 and the second bending end 52 are both far away from the first vertical wall 40 and are respectively close to the second vertical wall 42 and the third vertical wall 44 (i.e. the first bending end 50 is far away from the first vertical wall 40 and is close to the second vertical wall 42, the second bending end 52 is far away from the first vertical wall 40 and is close to the third vertical wall 44), so that the first outer side S1 and the second outer side S2 can be referred to as the high position side facing the outer side of the key 10 (the geometric center far away from the key 10 is referred to as the outer side), and the first bending end 50 and the second bending end 52 are both far away from the second vertical wall 42 and the third vertical wall 44 respectively close to the first vertical wall 40 and the second bending end 52 are far away from the first vertical wall 40 and are far from the third vertical wall 44, respectively, and the key cap 12 is pressed to the lowest pressed position. The diameter of the first balance bar 18 may be set to be approximately similar to the height of the first vertical hole 46 (from the lower edge of the eave portion 38 to the upper surface of the first abutment block 56), and the diameter of the second balance bar 20 may be set to be approximately similar to the height of the second vertical hole 48 (from the lower edge of the eave portion 38 to the upper surface of the second abutment block 60), but since the load-bearing area 220 of the thin film circuit board 22 is provided between the balance bar 18/20 and the abutment block 56/60, the balance bar 18/20 does not slide outward until its entire structure is pressed directly above the load-bearing area 220 and the abutment block 56/60.

In detail, with the above-mentioned design, when the key cap 12 is pressed from the non-pressed position shown in fig. 4 to the pressed position shown in fig. 5, the first bending end 50 of the first connecting section 32 can be separated from the upper and lower clamping of the brim portion 38 of the upright portion 28 and the first abutment block 56 of the flat plate portion 26, and slide inward along the first vertical hole 46 toward the first vertical wall 40 as the key cap 12 moves downward, and the second bending end 52 of the second connecting section 36 can be separated from the upper and lower clamping of the brim portion 38 and the second abutment block 60 of the flat plate portion 26, and slide inward along the second vertical hole 48 toward the first vertical wall 40 as the key cap 12 moves downward. In this process, the thin film circuit board 22 disposed on the bottom plate 14 to be electrically isolated between the first bending end 50 and the second bending end 52 and the flat plate portion 26 can support the first bending end 50 and the second bending end 52 to slide smoothly thereon, so as to reduce the collision noise caused by the sliding of the first bending end 50 and the second bending end 52 in the first vertical hole 46 and the second vertical hole 48, respectively, and further improve the pressing feeling of the key 10.

On the other hand, when the key cap 12 returns from the pressed position shown in fig. 5 to the non-pressed position shown in fig. 4, the first bending end 50 can move outwardly along the first vertical hole 46 to the position corresponding to the first abutting block 56, so that the first abutting block 56 can clamp the first bending end 50 up and down with the eave 38 through the thin film circuit board 22, and likewise, as the key cap 12 moves upwardly, the second bending end 52 can also move outwardly along the second vertical hole 48 to the position corresponding to the second abutting block 60 along the third vertical hole 44, so that the second abutting block 60 can clamp the second bending end 52 up and down with the eave 38 through the thin film circuit board 22, so that the key cap 12 can be more stably maintained in the non-pressed position shown in fig. 4 for the user to perform the subsequent pressing operation. In addition, since the first bending end 50 is clamped up and down by the eave portion 38 and the first abutting block 56 and the second bending end 52 is clamped up and down by the eave portion 38 and the second abutting block 60, no gap exists between the first bending end 50 and the second bending end 52 and the connecting structure 24, and therefore the invention can effectively solve the problem that the key is easy to generate impact or resonance noise with the balance bar under the condition of shaking or vibration of the structure due to the gap between the connecting section and the slot hole in the prior art, thereby further improving the noise reduction effect.

In practical application, as shown in fig. 4, the width of the first abutting block 56 may be preferably equal to the radius of the first bending end 50, so that the first bending end 50 may abut against the second vertical wall 42 when the eave portion 38 and the first abutting block 56 are clamped up and down as shown in fig. 4, thereby enhancing the limiting effect of the connecting structure 24 on the first bending end 50, but in another embodiment, the width of the first abutting block 56 may be larger than the radius of the first bending end 50, so that the first bending end 50 may be separated from the second vertical wall 42 when the eave portion 38 and the first abutting block 56 are clamped up and down, thereby reliably preventing the first bending end 50 from colliding with the connecting structure 24 when the key cap 12 is returned to the non-pressed position. The above design of the width of the first abutment block may also be applied to the second abutment block, and the description thereof may be analogized according to the above embodiment, and will not be repeated herein.

Generally, the first bent end 50 of the first connecting section 32 of the first balance bar 18 does not need to be moved outwards until the first bent end 50 (geometric center or integral structure) is completely located above the bearing area 220 and the first abutment block 56, so that the first bent end 50 can be stopped. The diameter of the first bending end 50 may be substantially Yu Diyi the height of the vertical hole 46 minus the thickness of the carrying area 220 of the thin film circuit board 22 and the remaining height after the thickness of the first abutting block 56, such that the first bending end 50 slides outward to the vicinity of the corner position of the first abutting block 56, which is limited due to the space reduction, and may be finally stopped by the carrying area 220 of the thin film circuit board 22 located above the corner of the first abutting block 56. In addition, while the above-described embodiment is directed to restricting the sliding of the first connecting section 32 of the first balance bar 18 in the short side direction (suppressing the rattling of the key cap 12 in the short side direction; possibly with an offset component in the long side direction), the design of the abutment block 56/60 may be used to restrict the offset of the first connecting section 32 of the first balance bar 18 in the long side direction in different embodiments; in particular, for the multiple key 10 with a small aspect ratio, the end of the first connecting section 32 of the first balance bar 18 does not necessarily have the first bending end 50, and the offset of the straight end of the first connecting section 32 in the long-side direction (for the shake of the key cap 12 in the long-side direction) can also be stopped by adopting the design of the abutment block 56/60.

In fig. 4, the first abutting block 56 and the second abutting block 60 are used to indirectly clamp the first bending end 50 and the second bending end 52 via the bearing area 220 of the thin film circuit board 22, but the invention is not limited thereto. The thin film circuit board 22 disclosed in the embodiments and the drawings of the present invention can be of a single-layer or three-layer design; the carrying area 220 disclosed in the embodiments and the drawings of the present invention may be located on the single-layer thin film circuit board 22 or the lower thin film layer of the three-layer thin film circuit board 22; in another embodiment, the carrying area 220 may also be located on the middle spacer layer or the upper film layer of the film circuit board 22.

In summary, the key 10 disclosed in the embodiment of the present invention defines the first vertical hole 46, the first plate hole 54 and the first abutment block 56 by the connection structure 24 of the bottom plate 14, the first plate hole 54 on the horizontal plane of the bottom plate 14 and the first abutment block 56 parallel to the first plate hole 54 are aligned with each other to correspond to the vertical first vertical hole 46, and the first plate hole 54 is communicated with the first vertical hole 46. The film circuit board 22 has its carrying area 220 corresponding to the first vertical hole 46, and the carrying area 220 at least partially overlaps the first plate hole 54 and the first abutment block 56. The first connecting section 32 of the first balance bar 18 extends from the first key cap section 30 to the connecting structure 24 connected to the base plate 14, and the end of the first connecting section 32 is movably inserted into the first vertical hole 46 of the connecting structure 24, while the bearing area 220 of the thin film circuit board 22 is located between the first plate hole 54 and the end of the first connecting section 32. With the above design, when the key cap 12 returns from the pressed position to the non-pressed position, the end of the first connecting section 32 moves outwards along the first vertical hole 46, and the end of the first connecting section 32 abuts against the bearing area 220 of the thin film circuit board 22 above the corner of the first abutting block 56, so as to reduce the offset and shaking of the key cap 12 and also reduce the impact noise or resonance noise of the first balance bar 18. The structure and actuation of the second balance bar 20 are similar to those of the first balance bar 20, so that the offset, sloshing of the key cap 12 and the impact noise or resonance noise of the second balance bar 20 can be reduced in a similar manner.

Besides, the structure and the number of the balance bars of the present invention are not limited to the double balance bar design of the above embodiment, and other size ratio keys can be configured by a single balance bar. As for the detailed description of this embodiment and other derivative variant embodiments, reference may be made to the analogy of the above embodiment, and this will not be repeated here.

Finally, the height of the keycap 12 in the non-depressed position may be determined by the upward restoring force of the restoring member to the keycap 12 and the design of the movement restriction of the lifting bracket 16 between the keycap 12 and the bottom plate 14, which also allows the lifting bracket 16 to be normally urged by the restoring force to extend to a tight fit between the keycap 12 and the bottom plate 14 when the keycap 12 is in the highest non-depressed position, but at this time the balance bar 18/20 is normally in a relaxed state due to the excessive clearance, which is one of the reasons for the structural shake or the pressing shake, such design being to control the maximum height (non-depressed position) of the keycap 12 with the restoring force and the lifting bracket 16. After introducing the design of the present invention, if the width of the abutment block 56/60 is wide enough (meaning that the thin film circuit board 22 has a narrower bearing area 220) such that the balance bar 18/20 slides outward a short distance to be abutted by the abutment block 56/60 and the bearing area 220, it is possible for the balance bar 18/20 to reach a tight fit state, where the key cap 12 reaches a maximum height, but the lifting bracket 16 is still in a relaxed state, this design is reversed by the balance bar 18/20 cooperating with the reset force to control the height of the key cap 12. If the balance bar 18/20 is abutted by the abutment block 56/60 and the bearing area 220, the lifting bracket 16 and the balance bar 18/20 are close to close fit, the height of the keycap 12 can be cooperatively controlled by the balance bar 18/20 and the lifting bracket 16 under the premise of unchanged resetting force. In other words, the design of the abutment blocks 56/60 of the present invention, while overcoming structural or pressing rattles, resonating noise/impact noise, also enables the possibility of the balance bar 18/20 being involved in controlling the height of the key cap 12.

The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. A key, comprising:

A key cap;

The bottom plate is provided with at least one connecting structure and is defined with a first vertical hole, a first plate hole and a first abutting block, wherein the first plate hole and the first abutting block are parallel to correspond to the first vertical hole, and the first plate hole is communicated with the first vertical hole;

the thin film circuit board is provided with at least one bearing area corresponding to the first vertical hole and at least partially overlapping the first plate hole and the first abutting block; and

The first balance rod is provided with a first key cap section and at least one first connecting section, the first key cap section is rotatably connected with the key cap, and the tail end of the first connecting section is movably inserted into the first vertical hole, so that the bearing area of the thin film circuit board is positioned between the first plate hole and the tail end of the first connecting section;

when the key cap returns to the non-pressed position from the pressed position, the tail end of the first connecting section slides on the bearing area and moves outwards along the first vertical hole until the tail end of the first connecting section is blocked at the position where the first abutting block abuts against the lower part of the bearing area.

2. The key of claim 1, wherein the width of the first abutment is greater than or equal to the radius of the end of the first connecting section.

3. The key of claim 1, wherein the width of the first plate hole is smaller than the width of the first standing hole.

4. The key of claim 1, wherein the first abutment block is located outside the first plate hole.

5. The key according to claim 1, wherein the connecting structure of the base plate further defines a second vertical hole, a second plate hole and a second abutment block, the second plate hole and the second abutment block are parallel to the second vertical hole, and the second plate hole is communicated with the second vertical hole;

the thin film circuit board is also provided with another bearing area corresponding to the second vertical hole and the other bearing area and at least partially overlapping the second plate hole and the second abutting block;

The key also comprises a second balance bar, which is provided with a second key cap section and at least one second connecting section, wherein the second key cap section is rotatably connected with the key cap, and the tail end of the second connecting section is movably inserted into the second vertical hole, so that the other bearing area of the thin film circuit board is positioned between the second plate hole and the tail end of the second connecting section.

6. The key of claim 1, wherein a diameter of the end of the first connecting section is greater than a remaining height of the first vertical hole after deducting a thickness of the bearing area of the thin film circuit board and a thickness of the first abutting block.

7. The key of claim 1, further comprising at least one lifting bracket coupled between the key cap and the base plate.

8. The key according to claim 1, further comprising:

the reset piece is arranged between the keycap and the bottom plate and is used for providing reset force to the keycap.

9. The key of claim 1, wherein the first abutment block has an open edge abutting the first upstanding aperture; or the first abutment block has an open edge abutting the first plate hole.

10. A key, comprising:

A key cap;

The bottom plate is provided with at least one connecting structure and is defined with a first vertical hole, a first plate hole and a first abutting block, wherein the first plate hole and the first abutting block are parallel to correspond to the first vertical hole, and the first plate hole is communicated with the first vertical hole;

The thin film circuit board is provided with at least one bearing area corresponding to the first vertical hole and at least partially overlapping the first plate hole and the first abutting block;

At least one lifting bracket connected between the key cap and the bottom plate;

at least one reset piece for providing reset force of the key cap; and

The first balance rod is provided with a first key cap section and at least one first connecting section, the first key cap section is rotatably connected with the key cap, and the tail end of the first connecting section is movably inserted into the first vertical hole, so that the bearing area of the thin film circuit board is positioned between the first plate hole and the tail end of the first connecting section;

When the key cap returns to the non-pressed position from the pressed position, the tail end of the first connecting section slides on the bearing area and moves outwards along the first vertical hole until the tail end of the first connecting section is blocked at the position where the first abutting block abuts against the lower part of the bearing area.